The UK mainland's first fully intact Viking boat burial site has been discovered by archaeologists working in the Scottish Highlands. The 5m-long grave contained the remains of a high status Viking, who was buried with an axe, a sword with…

by Claudine Zap The term "twins" usually brings to mind two nearly identical people. But that's not always the case. In rare instances, twins have been born with some unusual differences. Here's a look at some extraordinary pairs. First, take…

The rising prevalence of obesity around the globe places an increasing burden on the health of populations, on health-care systems and on overall economies. Using a simulation model to project the probable health and economic consequences from rising obesity rates…